Plug valves - catalogue - Cowan Dynamics

LINED PLUG VALVESIN-LINE ADJUSTMENTFluoroSeal® Lined Plug Valves feature the state-of-the-art EZ-SEAL® (patentpending) adjustment mechanism, available on sizes 1/2” to 6” (DN 15 to DN150). No special tooling is needed to adjust an EZ-SEAL®, and the latter allowseffective maintenance planning and extended service life through simple visualdiagnostic. As the valve is being adjusted throughout its operational span, theMin / Max gauge integrated into the EZ-SEAL® cover indicates its remainingservice life. Regular visual readings of this gauge can assist plant managersand maintenance crews in scheduling of repairs and eventual line shut-downsbefore the wear on the valve reaches a critical point. The EZ-SEAL® system alsoincludes an ISO bracket which enables direct mounting of actuation in a widerange of ISO patterns.QUADRUPLE ATMOSPHERIC SEALSingle point external adjusting bolt (patent pending) in the EZ-SEAL® coverensures equilibrium to the compression of the stem and in-line seals byimparting a balanced force through a metal thrust cam inserted in the coverabove the formed metal diaphragm. This system provides a definitive advantageover other adjustment methods available on the market by eliminating all sideloading and related wear-and-tear on the liner.The primary seal of the plug valve is between the plug and body liner. Theadditional sealing levels are an integrated delta ring and PTFE diaphragmcompletely encapsulated by a metal diaphragm. The delta ring and PTFEdiaphragm have a double role of plug and stem seal. The specially formedmetal diaphragm assists in encapsulation, acts as an antistatic device, and isa metal seal to atmosphere, in case of PTFE failure. The combined mechanismprovides an excellent, quadruple seal to atmosphere and a bi-directional in-lineseal adjustment.PLUG-ANSI-DIN-R002-2009Fourth Sealing LevelFirst Sealing LevelThird Sealing LevelSecond Sealing Levelwww.fluorosealvalves.comC3